118206489 has 4 divisors (see below), whose sum is σ = 157608656. Its totient is φ = 78804324.

The previous prime is 118206481. The next prime is 118206493. The reversal of 118206489 is 984602811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 118206489 - 2³ = 118206481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118206481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19701079 + ... + 19701084.

It is an arithmetic number, because the mean of its divisors is an integer number (39402164).

Almost surely, 2^118206489 is an apocalyptic number.

It is an amenable number.

118206489 is a deficient number, since it is larger than the sum of its proper divisors (39402167).

118206489 is an equidigital number, since it uses as much as digits as its factorization.

118206489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39402166.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 118206489 is about 10872.2807634829. The cubic root of 118206489 is about 490.7727484970.

The spelling of 118206489 in words is "one hundred eighteen million, two hundred six thousand, four hundred eighty-nine".